Jordan Spieth amused himself Sunday by skipping golf balls across a pond.

Because a $10 million payday for winning the 2015 FedExCup title at East Lake Golf Club didn't seem all that challenging, Jordan Spieth used some of his warmup time before Sunday's final round doing a few trick shots for the camera.

Even after a relatively short time on the PGA Tour circuit, Spieth is one of the game's most popular players. And needless to say, many of his fellow professional golfers took to social media to react to his accomplishment. Here are some of their responses, from the silly to the sincere:

Congratulations @JordanSpieth on a great year and big finish. Been an awesome 2015 for golf. Look forward to many battles to come.

Heading into the Tour Championship, Spieth had averaged 68.984 strokes per round in 87 total rounds. That's slightly better than Day's 69.163 average over 71 rounds. That's incredibly close -- a difference of .18 strokes over the entire season -- with just four rounds to be tabulated. And in either case, it'll be the first Vardon Trophy for the winner.

The final results will be released on Monday.

The award is based on a minimum of 60 rounds, with no incomplete rounds, in events co-sponsored or designated by the PGA Tour. The adjusted score is computed from the average score of the field at each event.

Rory McIlroy won the Vardon Trophy last season by averaging 68.82 strokes through 66 complete rounds. He edged Sergio Garcia (68.95), who completed 61 rounds. It was his second Vardon Trophy in three seasons. In 2013, Tiger Woods picked up his record ninth Vardon Trophy.

Fourteen players have won multiple Vardon trophies, but surprisingly, Jack Nicklaus is not among that group. Billy Casper and Lee Trevino have five each, while Arnold Palmer and Sam Snead won the Vardon Trophy four times.

The first winner was Harry Cooper in 1937, when the award was based on a point system. It was not awarded during World War II, then switched to adjusted scoring average when it resumed in 1947.

Whistling Straits, which hosted an amazing PGA Championship last month, comes in at No. 27 on the new Top 100 Courses list from Golf Magazine.

Most of us will never play all the best courses in the world, but many of us will play some of them. And that's what makes the release of the various Top 100 Courses lists so much fun to pore over.

Golf Magazine released its latest biennial list of the Top 100 Courses today, and it's packed with many of the great layouts with which we're all familiar. Interestingly, its list of the top 10 contains many of the same courses as you'll find on the Golf Digest list that came out in January, but in a slightly different order.

Here's the brand-new Golf Magazine top 10:

1. Pine Valley

2. Cypress Point

3. Augusta National

4. Shinnecock Hills

5. Pebble Beach

6. Oakmont

7. National Golf Links

8. Merion (East Course)

9. Sand Hills

10. Pinehurst No. 2

And here's the Golf Digest top 10:

1. Augusta National

2. Pine Valley

3. Cypress Point

4. Shinnecock Hills

5. Merion (East Course)

6. Oakmont

7. Pebble Beach

8. National Golf Links

9. Winged Foot (West Course)

10. Fisher Island

At the elite level of these world-class layouts, there is no real difference in quality – it's just a matter of personal preference. Golf Magazine explains that its list is determined by a panel of 100 raters that includes major winners, course architects, journalists and a cadre of connoisseurs who have played all of the world's top 100 courses. There are no set-in-stone criteria they must follow, the magazine says, adding that "we have confidence in their sense of what constitutes 'greatness' in a course."

For me, one of the most fun parts of perusing the lists is seeing what the raters think of the best new courses and those courses that have undergone significant renovations. A great example is the No. 92-ranked Blue Monster at Trump Doral, which Golf Magazine sums up this way:

"An extraordinary makeover from Gil Hanse and Jim Wagner took what had become a tired resort course and turned it into one of the toughest tests on the PGA Tour, a fire-breather that once again lived up to its name. Newly installed teeth in the form of added yardage, altered angles, contoured greens and steeper slopes around the greens have dramatically altered the layout, strengthening it in every way."

Another fun thing to do is check out where the various major championship venues rank. For example, 2015 PGA Championship host venue Whistling Straits comes in at No. 27, while 2016 PGA Championship venues Baltusrol (Lower Course) comes in at No. 32. These two courses couldn't be more different in look and attitude, yet they're only five spots apart in the ranking.